SPEEDPRO Ring Set - Cast - 4.030" #139.030

Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.

Cast V8 Ring Set
4.030 Bore +.030, 5/64"X 5/64" X 3/16", Std Tension